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   难度：Easy
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   <h1 class="question_title">
    181. Employees Earning More Than Their Managers
   </h1>
   <p>
    The
    <code>
     Employee
    </code>
    table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id.
   </p>
   <pre>
+----+-------+--------+-----------+
| Id | Name  | Salary | ManagerId |
+----+-------+--------+-----------+
| 1  | Joe   | 70000  | 3         |
| 2  | Henry | 80000  | 4         |
| 3  | Sam   | 60000  | NULL      |
| 4  | Max   | 90000  | NULL      |
+----+-------+--------+-----------+
</pre>
   <p>
    Given the
    <code>
     Employee
    </code>
    table, write a SQL query that finds out employees who earn more than their managers. For the above table, Joe is the only employee who earns more than his manager.
   </p>
   <pre>
+----------+
| Employee |
+----------+
| Joe      |
+----------+
</pre>
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   <h1 class="question_title">
    181. 超过经理收入的员工
   </h1>
   <p>
    <code>
     Employee
    </code>
    &nbsp;表包含所有员工，他们的经理也属于员工。每个员工都有一个 Id，此外还有一列对应员工的经理的 Id。
   </p>
   <pre>+----+-------+--------+-----------+
| Id | Name  | Salary | ManagerId |
+----+-------+--------+-----------+
| 1  | Joe   | 70000  | 3         |
| 2  | Henry | 80000  | 4         |
| 3  | Sam   | 60000  | NULL      |
| 4  | Max   | 90000  | NULL      |
+----+-------+--------+-----------+
</pre>
   <p>
    给定&nbsp;
    <code>
     Employee
    </code>
    &nbsp;表，编写一个 SQL 查询，该查询可以获取收入超过他们经理的员工的姓名。在上面的表格中，Joe 是唯一一个收入超过他的经理的员工。
   </p>
   <pre>+----------+
| Employee |
+----------+
| Joe      |
+----------+
</pre>
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